The adhesion of bionic non-smooth characteristics on sample surfaces against parts

The phenomenon of adhesion between the die/mould and the part occurs widely in die or mould moulding processes; this adhesion increases their working resistance. Bionics is one of the most effective methods to reduce the resistance. Several non-smooth surface moulds were tested to study the effect of non-smooth characteristics on the resistance reduction. Under the same materials and testing conditions, the adhesion forces of different non-smooth samples were obtained and all are lower than that of the smooth one. The experiments with smooth and non-smooth samples were repeated to observe the adhesion force and mechanism. The results showed that the aperture formed on the interface between non-smooth samples and parts was the main reason for making the bionic non-smooth surface samples more anti-adherent. This technique shows the promise for practical applications in reducing adhesion of die and mould against parts. (c) 2005 Elsevier B.V. All rights reserved.